In my quest to discover what has gone awry for my main two keywords on my main site I decided to click on the similar pages link in the serps. It seems my site, which is about a service in a particular location is now similar to network administration and other computer related stuff. On the -in index it is still similar to the service in my particular location. Could this be the cause of a problem or more likely a symptom. To the best of my knowledge, none of the sites I have gained links from are associated with any of the strange categories I am now similar to. About half of the results are from pages that I actually am similar to.